Ash cloud prevents leaders attending Polish funeral
US President Barack Obama will not attend Lech Kacyznski's state funeral on Sunday because of the travel chaos across Europe, the White House says.
Other figures unable to attend include the UK's Prince of Wales, French President Nicolas Sarkozy and German Chancellor Angela Merkel.
Most of Europe's major airports remain closed because of a volcanic ash cloud.
Thousands of mourners in Warsaw were at an evening Mass for Mr Kacyznski who died with 95 others in an air crash.
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Other figures unable to attend include the UK's Prince of Wales, French President Nicolas Sarkozy and German Chancellor Angela Merkel.
Most of Europe's major airports remain closed because of a volcanic ash cloud.
Thousands of mourners in Warsaw were at an evening Mass for Mr Kacyznski who died with 95 others in an air crash.